I primarily bought this for hiking but now wear it everywhere. I wear a 7 5/8 military cap and the L/XL fits perfectly. It's comfortable enough where I can wear it for the majority of the day but secure enough where it won't fly off in high winds.

I primarily bought this for hiking but now wear it everywhere. I wear a 7 5/8 military cap and the L/XL fits perfectly. It's comfortable enough where I can wear it for the majority of the day but secure enough where it won't fly off in high winds.